Explain what is a three tier data warehouse?
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What is what are semi-additive and factless facts and in which scenario will you use such kinds of fact tables?
How to create diff. Types of templates?
why oracle is the best database for data warehousing?
Do you always need to copy the data before reporting on it?(Example, real-time & on-demand reporting is a requirement)?
State any 5 of Cods guidelines of an OLAP system, brief description each?
Explain the difference between keylokup and joiner?
What are the stages that are required in data warehousing?
What is surrogate key? Explain with examples.
How to eliminate duplicate rows from flat file?
What is operational data store (ods)?
Where we use surrogate key explain with example?
What are diagrams?
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